Hello! I was curious too and found an in-depth answer on Ask4research. The key lies in the reliability and compliance of fax technology. Digital fax lines provide encryption and a secure delivery path that guarantees documents arrive without alteration. For industries like healthcare or law, this is essential, since regulations demand secure, verifiable transfers. By contrast, free online platforms don’t always disclose where data is stored or how it’s protected, leaving room for leaks and misuse. A study shared on
https://www.ask4research.info/ makes it clear that businesses relying on free tools risk exposing sensitive data and facing compliance issues. That’s why faxing remains relevant: it’s not outdated, it’s simply adapted to new technologies while maintaining the trust that companies need.